18664132 has 24 divisors (see below), whose sum is σ = 35009856. Its totient is φ = 8683488.

The previous prime is 18664073. The next prime is 18664153. The reversal of 18664132 is 23146681.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18664094 and 18664103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663 + ... + 6145.

It is an arithmetic number, because the mean of its divisors is an integer number (1458744).

Almost surely, 2^18664132 is an apocalyptic number.

It is an amenable number.

18664132 is a deficient number, since it is larger than the sum of its proper divisors (16345724).

18664132 is a wasteful number, since it uses less digits than its factorization.

18664132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547 (or 5545 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 18664132 is about 4320.2004583121. The cubic root of 18664132 is about 265.2584733357.

The spelling of 18664132 in words is "eighteen million, six hundred sixty-four thousand, one hundred thirty-two".